Influence of operation variables on fast pyrolysis of Miscanthus sinensis var. purpurascens

Hyeon Su Heo, Hyun Ju Park, Jin Heong Yim, Jung Min Sohn, Junhong Park, Seung Soo Kim, Changkook Ryu, Jong Ki Jeon, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of bio-oil. Process conditions were varied for temperature (350-550 °C), particle size (0.3-1.3 mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of bio-oil. The highest bio-oil yield of 69.2 wt.% was observed at a temperature of 450 °C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the bio-oil, the water content was 34.5 wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the bio-oil decreased gradually while that of water and aromatics increased rapidly. The bio-oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing bio-oil yield.

Original languageEnglish
Pages (from-to)3672-3677
Number of pages6
JournalBioresource Technology
Issue number10
StatePublished - May 2010


  • Bio-oil
  • Energy crop
  • Fast pyrolysis
  • Fluidized bed
  • Miscanthus sinensis var. purpurascens


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